Retro is a contemporary term used to describe things from a bygone era. It is often used in a postive sense, refering to quirky or attractive products that are no longer available.
For example, "Retro fashion" or "Retro Chic" may consist of outdated styles, such as tie-dye shirts from the 1970s, or poodle skirts from the 1950s.
... years, design work continued, aided by data from the British Aerospace EAP prototype which had first flown in 1986, and culminating in the first flight of the Typhoon ...